switch to microseconds async Clock
Merge pull request #108 from hsn10/microseconds

switch to microseconds async Clock
fix the warning on double scan here
Merge branch 'master' of github.com:deanhiller/playorm
ignore local.gradle
set retry strategy
Merge pull request #110 from hsn10/astyanax

set retry strategy in Astyanax
Merge remote-tracking branch 'upstream/master'
improve cache (hash) performance of read cache

pre-calculate hash value